Integrated 1
Name: _____________________________________ Per: ______
Unit 6 Test Review
Use the stem-and-leaf display of ages of presidents at the time of their first inauguration.
1.
Find the five-number summary for ages.
Minimum
First Quartile (Q1)
Median
Third Quartile (Q3)
Maximum
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2.
Create a box-and-whisker plot of inaugural ages.
3.
Determine whether each statement is true or false. Explain your reasoning.
a.
None of the presidents were inaugurated at age 58.
b.
The first quartile age at inauguration is age 58.
c.
The range of inaugural ages is 42 years.
d.
The median age at inauguration is 54 years.
e.
50% of presidents were inaugurated between ages of 51 and 58.
f.
The oldest 25% of presidents were inaugurated between the ages of 56 and 69.
4.
Create a dot plot of ages.
5.
Find the following statistical measures. Show all work.
Mean
Median
Mode
Range
6.
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Is the mean age at the time of inauguration for presidents the “typical” or “likely” age? Explain why or
why not. If not, what would be a “typical” or “likely” age?
Consider the following table.
7. Create a scatter plot of the data table.
8.
Find the balance point. Plot it in color.
9. Describe the association between the two variables. Explain.
8. For what value of b does the graph of the line 𝑦 = 5𝑥 + 𝑏 pass through the balance point of the data?
Complete the two-way table based on the following information. Of the 58 students that were right-eyed
dominant, 41 of them were athletes. Of the 33 non-athletes surveyed, 16 of them were left-eye dominant.
Athlete Non-Athlete Total
Left-Eyed
Right-Eyed
Total
9. In this survey, which group of students was more likely to be left-eye dominant? Describe the
calculations you used.
10. Is there an association between eye dominance and athletic status? Explain.